. >> i'm carolyn johnson. crime scene investigators removed possible evidence from the home. 10-year-old kevin collins disappeared february 10th, 1984. he was last seen at a bus stop. it is a block away from today's search. abc7 news broke this story this afternoon at 4:00 with details on the investigation that no one else has. john alston spoke with kevin's mother and brother. >> kevin, colin's mother said the family would have performed some form of closure -- preferred some form of closure. the bones indicate they were from an animal, but a final determination has to be made. police finally left the home after an all day search for the body of kevin collins. the boy's mother getting calls and e-mails of support. >> partly relief it is animal bones. partly sorry it is not closure. especially for my children and my grandchildren. >> only abc7 news was here this morning as san francisco police and the fbi began their search of the basement. a cadaver-sniffing dog detected something in the floor and city crews